Wilhelm staeblen



(No Model.)

W. STAEHLEN.

LAMP.

Patented May 2, 1882.

IN VBNTOR W mmd w H e H h WWW WITNESSES:

' appearance is provided, and also a simple and .ported by a rod, H, secured in the bridge I,

UNITED STATES PATENT Orrrcn.

WILHELM STAEEILEN, OF BROOKLYN, NEW YORK.

LAMP.

SPECIFICATION forming part of Letters Patent No. 257,402, dated May 2, 1882.,

' Application filed March 2, 1882. (No model.)

To all whom it may concern:

Be it known that I, WILI-IELM STAEI-ILEN, acitizen oftheUnited States, residing atB'rooklyn, E. D., in the county of Kings and State of New York, have invented new and useful Improvements in Lamps, of which the following is a specification.

This invention relates to that class of lamps which are provided with a supplementary inte rior oil-cistern, into which the wick ot' the burner dips, said interior cistern being adapted to move downward within an exterior main supply oil-cistern for the purpose of being replenished with oil contained in said main cistern.

The object of my invention is to improve this class of lamps, whereby a nice and attractive cheap construction.

The object of my invention is accomplished by the construction and arrangement of parts illustrated in the accompanying drawings, in which- Figurel representsa vertical central section. Fig. 2 is a horizontal section in the plane 00 as, Fig. 1.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a cylindrical cup made of porcelain or other suitable material, and provided with a foot, 13. Both these parts are made so as to impart to the lamp a handsome and ornamental appearance; but they form no portion of the working parts of the lamp. Into the cup A is placed a sheet-metal cup, G, which forms the guide for the outer movable oil-cistern, D. The cup 0 is firmly connected to the cup A, and the cistern D is provided with a top flange, a,which projects over the edges of the cup 0, and to which is firmly secured the supporting-plate E of the burner F.

In the interior of the outer movable cistern, D, is placed the inner cistern, G, which is supand extending down through the top plate of the foot B, to which it is firmly secured by the nut a. On the bottom of the outer cistern, 1), is a stufling-box, I), which embraces the rod H and prevents leakage. From said bottom rises atube, 0, through which the rod H passes, and which serves to steady the. movable outer cistern when the same is moved up and down.

On the outer surface of the inner cistern, G, is secured a key, d, which engages with a grooved guide, 0, fastened to the inner surface of the outer cistern, D, so as 'to prevent the inner cistern from turning round.

From the bottom of the inner cistern rises a tube,f, which is open at the top and bottom, and forms a vent to allow the air from the outer cistern to escape freely. Without suchvent the air would be compressed whenever the outer cistern is raised, and the operation of raising said cistern would require much power.

In the supporting-plate E of the burner is secured a tube, g, which forms the guide for the stem h of the float J, so as to indicate the level of the oil in the inner cistern. On said stem is fitted a movable stop, 6, which forms an index, and which is adjusted according to. the specific gravity of the oil. WVhen heavy oil is burned the oil in the inner cistern must be kept at a higher level than when light oil is burned, and consequently for heavy oil the stop 2' is moved down so that when the same comes close to the outer surface of the plate E a fresh supply of oil can be introduced before the flame becomes dull.

For the purpose of introducing a fresh sup ply of oil into the inner cistern, the outer cistern is moved up by taking hold of the rimof the supporting-plate E, and when the inner cistern has been filled the outer cistern is returned to its normal position.

The wick-tube K of my burner is made oblique, so that the wick will clear the vent-tube f and the bridge I.

What I claim as new, and desire to secure by Letters Patent, is-- 1. The combination, substantially as herein described, of an outer cistern, D, adapted to slide vertically, a supporting-plate, E, attached to the upper end of the cistern, and carrying a lai'np-burner and serving as a medium for raising and lowering said cistern, and a stationary inner cistern suspended in a fixed position at the upper end of the outer cistern, as

and for the purposes described. 4

2. The combination, substantially as herei11- before described, ot' the two oil-cisterns, one within the other, one being fixed while the other is movable in the direction of its axis, the rod ti Xed to theinner cistern and ex tending through astuffing-boxin the bottom of the outer cistern, and the burner secured to the outer cistern.

3. The combination, substantially as herein described, of the outer cistern, D, and the suspended inner cistern, G, provided respectively with the guide-groove e and the key d, whereby the outer cylinder can slide vertically, but not rotate, with a supporting-plate, E, attached to the upper end of the outer cistern, and'carryin g a lamp-burner, and serving as a medium for raising and lowering the outer cylinder, as and for the purposes set forth.

4. The combination of the two oil-cisterns, arranged one within the other, one of said cisterns being adapted to slide vertically, and the other provided with an air-vent extending through it in the form of a tube, and a rim attached to the movable cistern and carrying a burner, and serving as a medium for raising and lowering the movable cistern, as and for 20 4 the purposes set forth.

5. The combination, substantially as hereinbefore described, of the two oil-cisterns, one within the other, the inner cistern being fixed and the outer being made movable in the direc- 2 5 tion of its axis, the burner secured to the outer cistern, the float in the inner cistern having its stem extending through thesupportingplate of the burner and the adjustable stop on said stem.

. In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

. WILHELM STAEELEN. [L. SL1 

